Thanks for asking. I assume you are asking license for MG-Picker Studio?
If that is the question, indeed only the picker designer/maintainer will need a license. It is totally free for animators who just need to load and use the picker for animating.
For company use, you can simply sign up for free at ls1.mgland.com, and choose a license that suits you, it is either a node-locked license or a floating license.
A node-locked license is a one-off payment but bound to a machine, a floating license is subscription based and can be used on any machine.